Automatic carriage return and line feed mechanism



Feb. 18 1958 ANDERSON 2,824,169

AUTOMATIC CARRIAGE RETURN AND LINE FEED MECHANISM Filed April 29. 1954 2Sheets-Sheet 1 H. A. ANDERSON 2,824,169

Feb. 18, 1958 AUTOMATIC CARRIAGE RETURN AND LINE FEED MECHANISM FiladApril 29, 1954 2 Sheets-Sheet 2 THE QUICK BROWN FOX JUM PED OVER A LAZYDOG'S BACK l2345678 01 1/90 DTS SENDING,

THE QUICK BROWN FOX JUM'PED' OVER A LAZY DOG'S BACK l2345678 /fd DTSSENDING. THE QUICK BROWN FOX JUMPED OVER A LAZY/ 1 IN V EN TOR. $44M :4.final-Run BY 6 M United StatesPatent AUTOMATIC CARRIAGE RETURN AND LINEFEED MECHANISM Hilding A. Anderson, Lake Zurich, Ill., assignor toKleinschmidt Laboratories, Inc., Deerfield, 111., a corporation ofDelaware Application April 29, 1954, Serial No. 426,357

16 Claims. c1. 178-23) This invention relates to carriage return andline feed mechanism for page printing telegraph and like receivingprinting machines, and more particularly to improved means forautomatically conditioning such mechanism for operation.

Most printing telegraph messages are transmitted from previouslyprepared message tapes. The tapes are usually prepared by typingperforators which consist of a keyboard associated with a tape printingand perforating mechanism. As the tape is a long strip the operator needpay no attention to line length as is the case when the printing is doneon a page in tabulated form and messages recorded in this way are onlyreceivable on other tape printing equipment. Page printers are oftenused for receiving messages and as the standard line is 72 spaces long,signals for carriage return and line feed must be sent at the propertime.

Some perforators have end of line indicatorswhich inform the operatorthat the characters perforated will fill a line on the page and theoperator can insert the signals necessary for carriage return and linefeed operations of page printing receivers, but even with thisimprovement an operator sometimes fails to insert these signals, whichomission causes all page printing telegraph machines in the line to losethe rest of the message.

Page printing telegraph machines are made with automatic carriage returnmechanism but the majority of these have the disadvantage ofoverprinting the carried over character on the next printed lineresulting in loss of the carried over character plus the over printedcharacter. This is not too serious when the lost characters arealphabetical letters of a message. In most cases the lost letters may beinterpolated from the arrangement of the rest of the letters of the wordor by the meaning of the sentence in which the word occurs but, when thelost characters are numerals or letters of a code message, interpolationbecomes more difficult and quite often impossible.

Among the prior art efforts toward a solution to the problem ofoverprinting characters on the next line has been to provide a mechanismautomatically initiating a carriage return and line space functionwhenever the carriage has moved to within a predetermined distance fromthe end of a line and a non-printing function signal is received. Such amechanism is intended to prevent overprinting on the next line byreturning the carriage to its starting position within the time periodrequired to perform one character printing operation, so that if thecarriage return and line shift functions are initiated by receipt of anon-printing function signal, the carriage will have completed itsreturn before the next signal is received. Mechanisms of this type donot present a completely satisfactory solution to the problem because,if no non-printing signal is received within the predetermined distancefrom the end of a line, overprinting at the end of the line will resultuntil a non-printing function 2,824,159 Patented F eb. 18, 1958 signalis received and because the equal time periods for performing eachfunction cause the maximum rate of time for recording of characters tobe fixed by the time period required to safely accomplish a carriagereturn function. If carriage return time is decreased past a certainvalue to increase character receiving rate, the resultant jarring by thecarriage increases the wear and the frequency of repairs andadjustments.

This invention is independent of carriage return speed or receipt ofspecific types of signals. The recording mechanism operates in a normalmanner during the recording of an entire line of characters and theautomatic carriage return and line shift functions are initiated whenthe carriage reaches the end of a line by receipt of any type of signal,and if, during the carriage return, a character printing signal isreceived, the line shift will automatically function to present a clearsurface for the next line and. assure that the characters appear intheir proper sequence. from top to bottom of the page. Thus the presentinvention eliminates overprinting of char acters at the end of a lineand on succeeding lines regardless of the ratio between characterprinting time periods and carriage return time period.

It is the primary object of this invention to overcome the abovedescribed difiiculties by providing automatic carriage return mechanismcoupled with automatic line feed mechanism so that characters are neverlost by piling up at the end of a line or over printing on the nextline.

It is another object of the invention to provide means in a telegraphpage printer to automatically enable the line space mechanism andcarriage return mechanism to function on receipt of any signal by thesignal receiving mechanism after the carriage has moved to the end of aline.

It is a still further object of this invention to provide means in atelegraph printer whereby if a character is printed during returnmovement of the carriage, the line shift mechanism will automaticallyfunction to shift the recording medium so the next line of characterswill be recorded on a fresh surface clear of previously recordedcharacters.

These and other objects of the invention will become apparent from areading of the following description of a representative embodiment ofthe invention; the accompanying drawings, and the appended claims.

In the drawings:

Figure 1 is a perspective view of the mechanism of this invention viewedfrom the rear of a machine as disclosed in Kleinschmidt patentapplication S. N. 241,916, filed August 15, 1951, now Patent No.2,773,931;

Figure 2A and 2B are detailed views of the carriage return selectingmechanism; and

Figure 3 is a representative telegraph message as printed by a machineof the type disclosed in Kleinschmidt Patent No. 2,773,931 incorporatingthis invention.

, The reference character 10 indicates a portion of teletypewritertypebar carriage as described in Kleinschmidt Patent No. 2,773,931.Specifically, the part 10 is a journal for the type selecting arm 12which may be rotated to any of 32 selectable positions by the meshedhelical gears 14 and 16. The gear 16 slides on the square shaft 18 whichis'rotatably connected to a teletypewriter selecting mechanism asdisclosed in the above mentioned Kleinschmidt Patent No. 2,773,931. Thepart 10, hereinafter to be referred to as the carriage, is moved to, theleft, Figure 1, an amount equal to one letter space each time a printedcharacter is selected. Carriage 10 will return to an extreme right handposition, its first recording position, any time a carriage re- Mountedona bossll atthe top of carriage are two adjustable .stops20 and 22.These stops .20 and V 22. are flat plates with respective slots 24 and26 running lengthwise. They are suitably fastened on boss 11 by meanssuch asv screws 28 and:30 passing throughslotsg24pand 26. This enablesstop 22=-to be adjustably. positioned to .strike theendi34 ofthe..lever;32 when thewca-rriage 10 moves'vto its 73rd type, position.and:willset:in:rnotion- -clockwise-movement,as. viewed from above," tothe lever :32.

Two permutation code segments 52 and 54=may=be seen at the-extreme rightside of thedrawing. "These: are two of the ifive segments of =theselecting mechanism disclosed inzKleinschmidt Patent No."2;773,931hereinbefore cited. As viewed from the'right'of Figure 1, =the segment52has been turned counterclockwise and indicates-aspace or no-currentcondition of the signalling code, while *the segment-54-is iinthe' markor current position.

For-aclear understanding of the mechanism comprising this-inventionibis-necessary to briefly describe -howthe tteletypewriter"performs itscarriage return and line feed operations upon receiving those particularcoded signals. Lying alongside the coded segments 52 and 54 are twodrop-in levers 56-and-58. Lever 56 is allocated to=--the-line-feed-operation and lever 58 to the carriage return. Reference maybe ha'dto Figure 2A for specific details of this description. As viewedin the drawing, the front of the levers 56 and58- have notches 60 and 62at'about their mid-sectionsand-the inner edge of these notches pivotagainst an edge ,of a retaining comb 64 (indicated, in

Figure 1 by a heavyline). To'theleft of 11otches'60 and "62-are recesses68and69xwhieh are spaced to receive the ends of compression-coilsprings'70 and '71 the opposite ends of which are held by-projections72and 73 of .retaining comb 64. Thus it can be seen that drop-inlevers j56and'58 have a counter-"clockwise'bias which holds' their right endsagainst code segmentsSZ and'54.

-Pivotallyjournal1ed onjthe shaft'74 is lever 76 (allocated to thelineifeed operation) and78 (.to the carriage return operation). Thelever78 is mounted sothat its projection 80 will engage the end of'the.drop-in lever"58 when .the latter is in'its normal orcounter-clockwiseposition (shown by 'the phantom line .of illustration'Figure 2A). The lever. 76 will engage the end of thedrop-in lever 56when 'it is in its normal position. The lever .78 'has aflower leg"81 onthe end of which is a roundedcam follower .82. A rearwardly -projectingarmi84 'of'lever'78 has aspring 86 attached at 87 and to a-post (notshown) of the machine 'frame. Spring 86 imparts a-counter-clockwise biasto lever- 78 about shaft 74. The end of arm-'84 carries-apostSS-attached to-a vertical-rod 90' by means of-an eye 92.

:An eye'94atthe opposite-'end-of the rod is mounted .ona post 96projecting from an arm of abell crank lever 98. The bell crank lever 98is pivoted on a stationary part-of the-machine at 100=and its dependingleg 1 02 has .pivotally attached a'linkconnector 104 tohold a-rod-1'06which. is associated with t a clutch to operate the carriageweturnme'chanism. 'Thecam'follower'82on lever 18-rides 4 on a cam 108which is mounted on the function shaft 110 which makesonezhalfa.revolutioneach timethemachine receives a signal groupindicative of a printed character or function. Also carried on shaft 110are cams 112 and 114 associated with the line feed mechanism.

The lever 76 is similar to lever 78; its forwardly extending arm 77engages the end;of.the drop-in lever 56 (indicated by phantom lines inFigure 1). A lower section 79 ofsarm' 77 acts .as .a cammed-end suiface1'1'7x to :press laterally on a fingen'118 on-adever120 to press leverlaterally to thesleft. ,A-.. spring 121 ,is..connected 10.121vcentralportion of.lever.;1-20 and to the :frame (not shown) to biaslever 120 to the right. The 03111,;f0110WBI 116. of lever 76 rides oncam 112 on function shaft 110. The vertical lever 1'20 ispi-voted to anarm of abell crank 124 at 122. Pivot 122,.has zenougmplay. to;- allowfor a slight sideways movement of the lower end of the lever 120. Thislower end of the lever 120 has an arm follower roller 126 cooperativelyengageable with cam 114 when lever 1 20 is movedsideways intoalignmenttherewith. "The 'bellcrank 1-24-ispivoted at 128, to-the frame,andhasan upwardly extending arm 130 pivoted to"a link"132' of "the line'feed mechanism. A spring =134'attached "to. arear projection 135 of bellcrank 124 biases the crank'clock- WlS6.

1 Operation of carriage-return mechanism When code segments -52..and.54;. alongwith the other Ethree .thatmakeup .thecornplete permutationmechanism, are positioned .in clockwise.and counterclockwise direc-.,tions, resulting from. tthe, receptionaof .a group ;of signals.codedfor.the carriage.return,.there will "be; amotch ineach segmentunderneath the end.of.the:droprinlever. 58 (Figure 2A). Thislever.,58,,-biasedgby. spring 71, willpivot on .the. edge of :comb64,and..turn inia.counter-clockwise:di-

rection. The left end of the lever.;58 will swingoutwardly .thusdisengaging thesend of thearm--80ias seen-in solid ilines of Figure 2A.,The ifunctionzshaft-llO then; starts to rotateand, cam .follower 8.2will .drop. .011 ithe .high;part of ,the cam w108.- allowing =assudden.counter-clockwise zmove- .mentto the lever-78 throughzthe biasing forceoil-spring .86. Rod 92-x.will ,thus be pulled sup and s will turn bell,crank 98 counters-clockwiseresulting in .anuabrupt displacement .ofJOdi 106,10 ;the right. This :will: activate the ..elutchmechanismtoreturn carriage 10to ;the right side of atheum-achine.

.IThe line feed-mechanism works; in a. similar manner to .:thecarriageretummechanism;;when athe; drop=in; lever 56iSttlIrnQdzcuuntencloekwise dueztoan. alignment ofrnot'ches :indieativeofza line feed:group:of signals, end177 of lever -76=iwillgbedisengagedrzfirom the drop=in :leve11and,xwhen lth ifunction shaft-110revolyespthe :fOllOWCITllfiiWill drop :(zif Jillowing;a-sudden.countereclockwise.movement of .ileyer 76duetozthe biasing.force =ofaspring-141. Dropping ,of'arm-77zrwill cause section 79to:act:on:cam surface; 117 -Qfifinger;1=18.to moveilevertlztl'totherleftagainst the bias of spring 121 thereby positioning the roller126 at-the :bottomzofthe2lever2120.toathe left-.and on the low part of.cam;114. The :continued-revolving of the function shaft ::110 willcause'lthe .cam lobe 115-to-press down 'on the zroller l26: causingilever.120 =to 'move down and rotate:bell,:crank.:1ever3124:countemclockwise ato pull linki132 ,tothepleft.sAssociated' withzlink i132.:is. a pawl and ratchet .(notflshowny for.turning. the paper. feeding :rollers .for. feeding .a recording medium;suehas paper.

To complete-the mechanism requiredffor .the automatic.carr-iagereturnqand iline feed features alever 138 is sit- .uated at:the n'ght, .of .thespace. Whiclristraversed bycar- Iiage-.10. Lever;138.is. piv.oted at..1,40 toawstationary part ofthe machineandat.thesextreme,.rightend has an upturne'd'tip136. Theother end 1.42.;oflever-138 extends downwardly to engagea tip v146 of. as-lateh trigger.14.4

pivoted tothe stationary machine frame at 147. ,Trigger 144has'anarm'148 extending'tothe right'having a.spring 145"'attached ffltiiSmidpoint "to" bias ithettrigger in a m blockwise direction about pivot147. The arm 148 has a notch 150 at its outer end to engage projection47 of latch member 46 under certain conditions to be described.

Operation of automatic carriage return and line feed When the carriagereaches the 73rd character space at the left of the machine thecharacter for that position is printed and the stop 22 pushes the end 34of lever 32 to the left. The turning of lever 32 pushes rod 42 to theright and moves the arm 48 to the right. Arm 48 engages notches 57 and59 of the drop-in levers 56 and 53 and this right-ward movement of thearm 48 will slide the two drop-in levers 56 and 58 to the right(illustration Figure 2B). When the lower drop-in lever 58 is moved tothe right the left end will disengage arm 80 of lever 78 allowingrotation of lever 78 and resulting in the hereinbefore describedsequence of operations associated with the carriage return mechanism.Similarly the end of the drop-in lever 56 will disengage arm 77 of lever76 and the previously described line feed operation will take place. Toassure operation, the rod 42 is latched in its right hand position asnow described. When rod 42 has been pushed to the right to set in motionthe above sequence of operations latch member 46 moves to the rightcausing finger 47 to fall under notch 150 of the trigger 144. Thisnotched end of the trigger will then drop down through the bias ofspring 145 to hold latch 46, rod 42 and the arm 48 in their right handpositions.

When carriage 10 has returned to the right to the beginning of a linethe adjustable stop 20 on top of the carriage will strike the end 136 oflever 138 to move the opposite end 142 to the left. End 142 strikes theshoulder 146 of trigger 144 to turn the trigger 144 counter-clockwiseraising notch 150 out of engagement with latch 46. The rod 42 will thenbe moved back to the left by spring 50 and drop-in levers 56 and 58 willbe shifted back to the left by arm 48 and positioned to engage the endsof levers 77 and 80 which, during the sequence of operations, have beenrestored by the cams 110 and 108 to their up positions. The machine isnow conditioned to repeat the automatic cycle when the carriage againmoves to the 73rd space.

As the machine of Kleinschmidt Patent No. 2,773,931, to which thisspecific embodiment has been adapted, requires approximately three timesas long to return the carriage as to print a character, two charactersignals may be received during the carriage return movement. Theautomatic latch feature hereinbefore described, maintains the drop-inlevers in their function transmitting positions throughout the carriagereturn movement, therefore each time a printing character signal isreceived during the carriage return movement, a character is printed andthe line feed mechanism operated to advance the paper feed rollers andprinting stock one line space. This feature of line feed during carriagereturn prevents overprinting of characters with the consequent loss ofintelligence.

Having reference to Figure 3, the first line 152 and second line 154 oftype have been printed in the normal manner with two carriage returnsignals and a line feed signal following the numeral 8. It is to beunderstood that a single carriage return and line feed signal issufficient to start a new line when the machine is printing from amanually manipulated keyboard but when the printer is operating from apreviously prepared message tape there is no pause between any of thesuccessive signals and as hereinabove stated the carriage takes nearlythree character periods to return, so a suflicient number of signalsmust be given for this operation.

The third line 156 of Figure 3 has been printed from signals receivedfrom a message tape wherein no carriage return or line feed signals havebeen interposed at the end of the line. When the carriage moved to theposition to print the numeral 8, it conditioned the hereindisclosedautomatic carriage return and line feed mechaae s, tea

nism and upon reeeivingthe signal for the numeral 9 the platen fed aline and the carriage started to return. The numeral 9 was then printedin the position shown by the reference character 158. Immediately afterthe 9. was printed the signal for 0 was received, again the platen wasline fed and the 0 was printed in the position shown at 160. After the 0was printed a character space signal was received, again the platen wasline fed and the carriage completed its travel to the start of the line.If the latter signal had been one resulting in a printed character, theprinting of that character would have occurred at the beginning of line162. The new line 162 was then printed.

It can be seen from Figure 3 that the numerals 9 and 0 are not lost byoverprinting as would be the case if line 162 had not been dropped threespaces, and by reading from right to left theintelligence of the messageis retained.

It will be understood that the mechanism disclosed in the foregoingdescription provides an effective and desirable solution to the problemof receiving tape fed messages on a page printing receiver withoutincurring either overprinting of characters at the end of a line, shouldno carriage return signal be transmitted, or overprinting during thecarriage return movement with resultant loss of intelligence ofcontinuity in a message. This is accomplshed by incorporating anautomatic carriage return and line feed function at the completion of aline of printed characters and further incorporating a line feedfunction each time a character is printed during a carriage returnmovement.

This invention will result in a printed message where all printedcharacters will be intelligible and the continuity of a message is notbroken by overprinted characters or improperly spaced carriage returnand line feed transmitting signals.

The invention may be embodied in other specific forms without departingfrom the spirit or essential characteristics thereof. The presentembodiments are therefore to be considered in all respects asillustrative and not restrictive, the scope of the invention beingindicated by the appended claims rather than by the foregoingdescription, and all changes which come within the meaning and range ofequivalency of the claims are therefore intended to be embraced therein.

What is claimed and desired to be secured by United States LettersPatent is: i i

1. In a telegraph machine; a selector mechanism adapted to convertreceived electrical signals into mechanical movement; a recordingmedium; a movable carriage; means carried by said carriage andcontrolled by said selector mechanism to record characters upon saidmedium in accordance with the received signals; means for normallymoving said carriage one character space for each recording operation; afirst means responsive to a specific received signal for returning saidcarriage to its starting position; a second means responsive to adifferent specific received signal for advancing said recording mediumto start a new line; mechanical initiating means for enabling said firstmeans and second means to respond to any received signal between thetime the carriage reaches an end of line position and when it reaches astart of line position.

2. A telegraph machine as defined in claim 1, wherein said initiatingmeans is so located that enabling of said carriage return means and saidrecording medium advancing means is effected by said movable carriagewhen the latter reaches a predetermined position in its characterspacing direction.

3. A telegraph machine as defined in claim 2, wherein means are providedso that when said recording medium advancing means is enabled by saidmechanical means it advances a line each time any signal is receivedduring the period of mechanically initiated return of said carriage. 4.A telegraph machine as defined in claim 1, wherein *7saidiselectonmechanism.includesfirstelements responsive ,to-saidspecific rcceivedisignals ,and. second {elements re- .sponsive..to..said,dfiierent i specific. received. signals, .said lfirst andssecondelements, being. also responsive .to said mechanicallinitiating :means.

5. Atelegrapnmachinenas defined in .cl'aim.4,.whereinsaid:selectingmechanism. includesa. group of notched permutation.members, .andin .which said tfirst, elementis pivotable into alignednotches of. said permutation members asia resultof receivingsaidspecific signal,.-and in. which said second.elementispivotable intootheraligned notches of .said,p.ermutation members-as a result of receiving:said 'difierent specific signal, pivoting of said first and secondelements causing said carriage, returnand lineadvancing means (tooperate; animechanicalnreans adaptedio. .beactuated.byisaidmovable.carriage-to reposition said firstand=secondlelements to eausesaidcarriage return and line advancing meansto operate irrespective of specific electrical.signalling.conditions.

6. Atelegrapnmachine: asdefinedi-n claim including means tolatchsaidfirst andseco-nd elements in theirnew positions and .means. toreturn .,said first and second elements tottheir:normaLpositions .when:said carriage has returnedto. the start =of-a line.

7. Atelegraphmachine\is,defined in claim 6, wherein said. latching meansis caused .to-be-locked .by saidcarriagewhen .theilatterwisiniits lastcharactenposition of a line and. wherein saidlatching means -is causedto be unlockedwhen said carriage isinj-its start of line position.

. 8.. A telegraph, printingrmachine comprising: a frame; recordingmeans; a carriage movably mounted on--.said .frame; means. for. movingsaid carriage; one character. space for. each recording :operation;means including; code. segmentsfor receiving andconverting characterand-function indicative electric signals to coded predeterminedpermutative settings of segments; means controlled by-said codedsegments'and said mov-ablencarriage :and including elements engagingandresponsive-to specific code settingsof said segmentsqtoadvance:therecording means .one, line :spaceand toreturmt-he carriage to :thestarting position of aline; mechanically actuated means carried on said.frame, cooperating Withsaid elements and operating therethrough toreturnzsaidvcarriage. andit-oshift said recording meansonelineind-ependentlyof a carriagereturn signal. 9. In a printingtelegraph machine a recording medium .feeding roller; a movabletypebarcarriage; lineqspace mechanism to advance said feed rollerna carriagereturn mechanism, a character space-mechanism; electric signalresopnsivegrmeans :inluding .-a;. group of; selector members .and agroup of'levers adaptedtozcoact with said selector members and,co-actingwith said line space, carriage re- .turn, and character. spacemechanisms tolselectively enable said mechanisms to.performztheirspecific functions according to a received electric:signal; mechanical means actuated by saidcarriage at onelimit ofitspath' of move- ,ment andinterconnected with theioneof said levers co-,acting With-said linespace mechanism and with the one of said levers.co-acting With said carriagelreturn mechanism to mechanically :shift.such two levers independently of a received electrictsignal toenablesaid line space mecha nism and-said carriage return'mechanism tofunction upon rreceipt of any .signal received by the signal responsivemeans, said mechanical means including a latching means 'to maintainsuch two leversin their shifted positions until :the carriage isreturned to itsopposite limit postion.

10. An automatciline feed and carriage return mecha- :nism for atelegraph printer including an electri-csignal actuated line feed-andcarriage return mechanism and a movable carriage disposed in a framecomprising: engagring-means carried by :said frame and-adapted-to bemoved zfrom a1 first position to a'second-position by said carriagemoving past a predetermined"position,to engage said ;signal actuatedline feedandca-rriage returnmechanism to-mechanicallyenablesaidymechanism to be operated to .performiadine feedand carriage. returntunction.up on.re

wceipt, of .anwsignal ,by said .Zsignal, receiving mechanism betweemthetimeithat said .carriage moyes pastthe .predetermined position and isreturned to its start position.

ll. i An automaticlinefeedand carriage return mechanism, as set-iforthin claim, --1,0,-;.further comprising latching m n ic ing'w thanM lngsaid.e ag ng mean as positionedi bysaid carriage-moving; pastapredetermined po ition, un il-said: carriag has -been return lo a linstart .pQsition; whereby (anyssig-nal .--r eceived--; during: thecarriage return movement willresultin aZline feed operation.

' 512.1Inaan automatic line feed and 'carria'ge returnmechranism aszseh-forthdn. claim 11: latch release means reooperatingiwi'th:saidrlatching meansandcactuated byzsaid carriage ;upon :its :return tot thev line start position to .unlatch. saidengaging fmeansaandmeansconnected to; and biasing :saidaengaging:means-totthe said ifirstziposition.

.13. In 'combinationxwitht a;=signal actuated receiver; a telegraphprint-er including-1a signal actuated :line space and':.carriagereturmmechanism and a-.movable carriage disposed rilli aifframe, -rneansfor :elfecting automatic actuation-40f said .line space and .carriage'return-.mecha- :nisms .icomprising means disposed on said printer in i anormal:,-inoperative :positiomand .adapted .to be reposi- :tioned bysaid carriage when the carriage moves past a predetermined -'locationto. .engage said signal. actuated line feedzand carri'age-ireturnmechanismito mechanical- ;ly. enable saidmechanismwto be :operated toperform a line? feed and .carr'iage-ireturnofunction.upon; receipt ofevery subsequent signal byhsa'idwsignal receiving .mechasaidcarriage:Iteturrtganddine-feed means simultaneously operative.uponaevery.selective setting of saidipermuta tion device duringrthepcriod fromr-the timezsaid movable carriageireaches; the-:end Of a line:position until it has beenreturnedtothe start of a lineeposition.

315. A-telegraph printingmachine comprising: amovable carriage, aselectively, settable permutation device having a plurality ofsettingzcombinations corresponding to gcharacters andsmacllinefunctions, a'first 'means responsive to; one 5 of said -settingcombinations for .accomplishing agcarriagemeturnfunction, assecond-meansresponsive to a second of said setting combinations for accomplishing aline; feedrfunction, and a;third means renderedzoperablevby:saidcarriage reaching-the endof a line fon enablingsaidfirst and secondmeans to accomplish carriage return and line feed 'functionioreveryselective :setting EOf said permutation device occurringduringtheaperiodifremtthe time said movable carriage reaches .theendtol? a' line position until it has been returned-to the start of a lineposition.

'16? In a printing telegraph machine operated in response tocoded-signal conditions and adapted to record. characters in transverselines on a record medium; a carriage movableforfcharacter spacing, meansfor feeding said record medium instep for linespacing, means forreturning said carriage to its, start-of-lineposition, and meansrendered effective when said carriage reaches its end-o f-line positionand remaining effective until said carriage reaches itsstart-oflineposition for causing-said carriage return means and saidfeeding means to be operated incident to any coded signal condition toreturn said carriage to its start-of-line position and assure that eachcharacter printed after the carriage reaches its endof-line position andduring the carriage return will not be overprinted by a succeeding lineof characters.

References Cited in the file of this patent UNITED STATES PATENTS MadsenMay 10, 1955

